14 citations · 14 across the 1 of their papers we have counts for
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X-rays from the barred galaxy NGC 4303
D. Tsch"oke, G. Hensler, N. Junkes
The late-type galaxy NGC 4303 (M61) is one of the most intensively studied barred galaxies in the Virgo Cluster. Its prominent enhanced star formation throughout large areas of the…
Chemical Evolution of Dwarf Irregular Galaxies - chemodynamical models and the effect of gas infall
Gerhard Hensler, Andreas Rieschick, Joachim K"oppen
Because of their low gravitational energies dwarf galaxies are greatly exposed to energetical influences by the interstellar medium, like e.g. stellar radiation, winds or explosion…
ROSAT X-ray observations of the interacting pair of galaxie NGC 4410: evidence for a central starburst
D. Tsch"oke, G. Hensler, N. Junkes
We present X-ray observations of the interacting pair of galaxies NGC 4410a/b with the ROSAT HRI and PSPC. The ROSAT HRI images reveal a point-like source corresponding to NGC 4410…
The evolution of helium white dwarfs: I. The companion of the millisecond pulsar PSR J1012+5307
T. Driebe, D. Sch"onberner, T. Bl"ocker +1
We present a grid of evolutionary tracks for low-mass white dwarfs with helium cores in the mass range from 0.179 to 0.414 Msol. The lower mass limit is well-suited for comparison…
Fragmentation of Expanding Shells in Spiral and Irregular Galaxies
S. Ehlerova, J. Palous, Ch. Theis +1
Conditions for the fragmentation of expanding shells due to gravitational instability are discussed. The self-similar analytical solution is compared with the results of 3-dimensio…